> Regular plasma donation is probably much worse for your long term health than ppb levels of pfas.

You should in the very least read the summary. Even though the trial referred in the submission tracked regular plasma donations, the reduction of "forever chemicals" was not a function of how regular they were, only the volume of blood/plasma donated by the firefighters.

Also, I'd be surprised if the rate wasn't tied to the initial concentration, which would mean that increased rates lead to diminished returns.